To Scott's point, some Sch. 10 is rated/listed for 300 psi but not all and I would DEFINITELY want more info before putting high pressure on vintage 1976 lightwall. There are different grades of ASTM piping; I did a search last year and found Sch. 40 rated from 400-600 psi depending on parent metal class and diameter.
So I would try to research the installed material first, using the mill markings for reference. Or hydro at working pressure + 50. Or replace with material you know for sure is rated/listed for your WP. Steve L. <div>-------- Original message --------</div><div>From: Alexandre Lupien <[email protected]> </div><div>Date:02/28/2015 2:45 PM (GMT-08:00) </div><div>To: [email protected] </div><div>Subject: RE: Hi-pressure welded schedule 10 joints & fittings </div><div> </div>I didn't assume any conclusion. I just wanted to discuss about my issue on the forum. I agree that maybe I should have take more time to explain. Sorry for the inconvenience > From: [email protected] > To: [email protected] > Subject: RE: Hi-pressure welded schedule 10 joints & fittings > Date: Sat, 28 Feb 2015 22:18:24 +0000 > > Wow Alex. You didn't provide any of that information in you initial post. > > Based upon the information Tim provided, how do you leap to the conclusions > and assumptions that you made? > > I would think a little more research might have to go into this before you > finalize your modifications. > > Scott > > Office: (763) 425-1001 x 12 > Cell: (612) 759-5556 > > -----Original Message----- > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Alexandre Lupien > Sent: Saturday, February 28, 2015 1:58 PM > To: [email protected] > Subject: RE: Hi-pressure welded schedule 10 joints & fittings > > Hi Tom > > Thanks for your answer. > > I was familiar with these aspects and this confirm it. > I wanted to make sure that an existing standpipe system dated of 1976 in a > condo building of 21 floors was able to withstand the new fire pump > requirements at churn. The standpipe seems to be made entirely of welded > joints (with a min. of schedule 10 piping I assume). In this case, I guess, > only the hose connections will have to be replaced by pressure reducing > valves. > > Alex > > > From: [email protected] > > To: [email protected] > > Subject: RE: Hi-pressure welded schedule 10 joints & fittings > > Date: Sat, 28 Feb 2015 13:59:18 -0500 > > > > Alex, > > > > Refer to NFPA 13, 2010, 6.3.2. for Schedule 10 and 40. > > > > You can also check with the major sprinkler system component Suppliers > > and their vendors for Specs on the material. > > > > Regards, > > G. Tim Stone > > > > G. Tim Stone Consulting, LLC > > NICET Level III Engineering Technician Fire Protection Sprinkler > > Design and Consulting Services > > > > 117 Old Stage Rd. - Essex Jct., VT. 05452 > > CELL: (802) 373-0638 TEL: (802) 434-2968 Fax: (802) 434-4343 > > [email protected] > > > > -----Original Message----- > > From: Sprinklerforum > > [mailto:[email protected]] > > On Behalf Of Alexandre Lupien > > Sent: Saturday, February 28, 2015 1:51 PM > > To: [email protected] > > Subject: Hi-pressure welded schedule 10 joints & fittings > > > > Hi, > > > > I would like to know if schedule 10 piping with welded joints and > > fittings are approved to withstand hi-pressure (300 lbs) for a > > standpipe system. If not, what about schedule 40. > > Can you refer to the standard mentioning this. > > > > Thanks > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.org > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > > er.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
